Extend "Do not send if guest already reviewed" to VRBO

Problem Statement:

• The "Do not send if a guest has already published a review" option in automated review message rules only applies to Airbnb
• VRBO guests can leave reviews through the new integration, but Hospitable still sends automated review request messages to them regardless

Current Workaround:

• Manually monitoring which guests have already left VRBO reviews and pausing/skipping messages manually

Impact:

• Guests receive unnecessary review request messages after already leaving a review
• Creates a poor guest experience with redundant messaging
• Requires manual effort to avoid duplicate requests

Proposed Solution:

• Extend the "Do not send if a guest has already published a review" condition to also apply to VRBO listings

Unlock:

• Hosts can automatically avoid sending redundant review requests to VRBO guests who have already reviewed
• Improves guest experience and reduces manual management